Paper-bag machine.



No. 760,013.. PATENTED MAY 17, 19M-. J. P. ONDERDONK.

PAPER BAG MACHINE.

APPLICATION-FILED DEO.1`8, 1902.

N0 MODEL.

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No. I760,013.

l UNITED STATES y Patented May 17, 1904i.

PATENT OFFICE. E

` PAPER-BAG MACHINE.

sPEoiricAfrioN forming part of Letters Patent No. 760,013, dated Maya?, 1904., V

Application filed Decemherl, 1902. Serial No. 185,810. (No m0del.)

the city and county `of Philadelphia, State of Pennsylvania, have invented an Improvement in Paper-Bag Machines, of which the following is a specification. l

`My invention has reference to lpaper-bag machines; and it consists of certain improvements which are fully set forth in the following specification and shown in the accompanying drawings, which form a part thereof.

The object-of my invention is to provide means in a paper-bag machine which shall cause the tube to be slit or cut longitudinally at intervals, so that when subsequently severed transversely into bag lengths one or both ends shall have four loose iaps or tongues, each extending from corner to corner. My invention is applicable equally well to bellows side fold tubes and plain tubes. When the parts or ends constituting; the corners are slit or cut in this way, the paper may be folded to form a square end l and perfectly seal the t machine with means for cutting or slitting the paper where itis bent over the side edges of the former, the said cutting or slitting means being adaptedY to "operate intermittently, so

that the cutsor. slits shall extend `only over the desired length of the tube to insure the said cuts or sli-ts .to come at one or both ends of the bag, `as may be desired. I

My invention also comprehends many details of construction which, together with the above features, will be better understood by reference to the drawings, in which`-` Figure l is a side elevation' ofapo'rtion of a paper-bag machine embodying my improvements. Fig. 2 is a plan view of the same. Fig. 3 is a cross-section of the former and cutters on line 3 3 of Fig. 4. Fig. 4 is a plan view of the cutting or slitting devices of the former. Fig. 5 is a similar view showing a modification. Fig. 6 is a cross-section of Fig. 5 on line 6 6. Fig. 7 is a plan viewl of a modified form of cutting or slitting' device. Fig. 8 isa perspective view of a portion of the paper ceived.

tube. Fig. 9 is a `perspective view of a bag length of paper tube slit as 1n accordance with my invention, andV Fig". 1'() is` a' perspective View of the bag when folded.

A is the lower portion or plate of the former, and B is the vupper portion, and these are secured togetherby part C, of less widththan the parts A and B, so as to leave a recess between the parts A A on each side, into which `the bellows-fold ofthe paper tube'D is re- The paper tube I) may be formed' V in any well-known manner and have the bellows folds formed by causing' the paper to be drawn against the creasing-rolls E, interposed between -the upper and lower platesA B of i the former.

F and G are' feeding-rolls for the tube andare geared together, as at K.

This blade I isrotated movements timed. All of these parts or their :equivalents are found in bellows side fold pa-f lper-bag machines and also in machines mak-V ing plain tubes, and hence are shown forillustration onlyfand to more clearly indicate andl ldeine the-nature ofmy improvements.

The former-plates A and B `in advance of the feeding-rollers F are provided with knives,` or cutters M M, against which .the paper is` ,pressed by the pressure-rolls m; 'These presisuirerolls are journaled upon' the end of pivtedarms-N, whose outward movement is lim-- itedby stops O and caused by a spring N. l'lhear'ms N may be oscillated in any suitable manner so' long `as the oscillations are prop- `erly timed with the transverse .cutterl for the tube.

As shown, thearms N carry on their ends rollers a, which rest against camwheels P P, secured to a rotating shaft p. Each revolution of this shaft causes the arms N to be oscillated. The revolution of shaft p is produced by gears R R' R2 R, connect- [n-l I, termediateof these feeding-rolls F and G is the transverse cutting-blade I for dividing the tube into bag lengths. by a shaft J and in rising under the paper a presses the lower layer against a serrated edge f ofthe former A and the upper layeragainst i a serrated cutter H. The shaft J is geared to thelfeed-rollers F by gears L, so as to have itsT IOO may be varied relatively to the speed of the feed-roller F, and consequently the distance apart of the successive cutting or slitting may be regulated to suit the requirements. By the shape of the cam parts of the cam-wheels P the length of the cut or slit may be governed. 4

It will now be seen that as the paper tube is fed forward the lateral edges of the tube are cut or split at intervals by the pressure of the rollers m upon the paper, and thereby the pressure of the paper upon the cutting-blades M. The tube D will then have the appearance of what is shown in Fig. 8, in which S represents the cuts or slits. The dotted line T represents the transverse line of cutting or severance of the tube to constitute bag lengths. To insure the proper transverse cutting, there is of 'necessity a proper timing of the cutting mechanism M m and the cutter I, and it is wholly immaterial to my invention what the special form of the devices are which secures such timing, that shown being by way of illustration only. It will be also seen that by mere adjustment of the relative time of action of the cutter I or cutting mechanism M m the transverse line of severance may be made to come in the middle of the cuts or slits S, in which case the two ends of the bagsection will have its corners cut or slit, as shown in Fig. 9. In Fig. 8 I have shown the line of transverse cutting to come at one end of the cuts or slits S, and such cuts or slits may be made to come on the bottom or mouth of the finished bag, as`desired, to accomplish which relative adjustment of the parts'alone is necessary. Y

In place of arranging the cutting-blades inside the tubes and on the former they may be arranged on the outside and secured to the arms N in place of the rollers m. rlhis is shown in Figs. 5 and 6, in which M is the cutter or knife and m a depression or groove in the lateral edge of the former to receive the cutting edge of the knife. In Fig. 7 I have shown the cutter form of a disk IV 2, journaled in the edge of the former. Any other form of cutter for the purpose of cutting or slitting the tube at intervals in its length may be employed in lieu of those shown.

My invention` is equally applicable to those forms of tubes in which there is no bellows side folds, and it is immaterial to my invention, broadly considered, whether or not the four cuts or slits longitudinally of the body come at the edges of the former, as the essen'- tial feature is the means for cutting or slitting the tube lengthwise at intervals with transverse severing devices to cut the tube transversely upon the longitudinal cuts or slits and in which the latter are so located in the tube as to come at the corners thereof in forming the bag to constitute overlapping tongues adapted to form a seal at bottom or mouth, or both, as preferred, such a seal being shown in Fig. 10. I therefore do not confine myself to the details of construction shown, as they may be modified in various ways without departing from the spirit of my invention.

What I claim as new, and desire to secure by Letters Patent, is-

1. In a paper-bag machine, the combination of a former with a groove on each side over which the paper is fed and formed into a bellows side fold tube and by which two lateral longitudinal side folds arev produced,` with means arranged adjacent to the lateral edges of the former and movable laterally to and from and in the plane of the former for cutting the said longitudinal folds of the paper tube on the creases at intervals in the length and also in the direction of the length of the tube.

2. In a paper-bag machine, the combination of a former over which the paper. tube is fed, cutters arranged adjacent to and coacting with the opposite edges of the former, oppositelyacting pressure devices for pressing the folded edges of the paper tube against the cutters during its travel to produce slits therein, and means for intermittently operating the pressure devices to cause the cutting of the paper at intervals.

3. In a paper-bag machine, the combination of a former presenting four lateral edges in pairs over which the paper tube is fed with bellows side folds, iiXed cutters arranged adjacent to and in line with the opposite edges of the former, oppositely horizontally acting pressure devices consisting of rollers for pressing the folded edges of the paper tube against the cutters during its travel to produce slits therein, and means for intermittently operating the pressure devices consisting of oppositely-acting movable carriers for the rollers and cams to operate the carriers to cause the cutting of the paper at intervals.

In testimony of which invention I hereunto set my hand.

JNO. P. ONDERDONK. Witnesses:

R. M. KELLY, M. J. EYRE.

IOO 

